258 T. Terapa and T. Matuzawa 



Jap, J. Astr. Geophys. Japanese Journa] of Astronomy and Geo- 

 physics^ National Eesearch Council of 

 Japan, (English and other languages). 



J.M.S. Journal of the Meteorological Society of 



Japan, (mostly Japanese) ; ' e.' before the 

 number of page means that the pajier 

 is in English ; ' e.' after the page number 

 means that an abstract beside the 

 Japanese text is given. 



Bull. C.M.C. Bulletin of the Central Meteorological 



Observatory, Tokyo, (mostly in English). 



U.t.S. Umi to Sora (Sky and Water), issued by 



Zisyukwai, Imperial Marine Observatory, 

 Kobe, (in Japanese). 



Mem. Imp. Mar. Obs. Memoirs of the Imperial Marine Obser- 

 vatory, Kobe, (English). 



Geogr. Bev. Chirigaku-hyoron (Geogra})hical Beview), 



Tdkyo, (in Japanese). 



Chikyu Chikyu (the Globe), Kyoto, (in Japanese). 



An exhaustivencss of reference can scarcely be loolced for. Wo 

 have refrained, to our great regret, from reviewing those valuable 

 periodicals such as : 



Journal of the Geological Society, Tokyo, 



Chigaku-Zassi, 



T6y6-Gakugei-Za ssi, etc . , 

 and also many important publications of Government Offices as 

 Tisitu-tyosazyo (Geological Survey). For the incompleteness of reference 

 we beg forgiveness^^ \ 



Statistical Investigations. 



As it is quite natm-al and legitimate in the earlier stage of the 

 development of a science concerning natural phenomena, the statistical 

 sides of the investigation have been mostly favoured by the pioneer 

 seismologists of this country who had more than ample materials 

 for the investigation at their disp.osal. Among the various important 



(1) Papers referred to in this review are those which appeared np to the end 

 of Feb., 1926. Unpublished results are also freely quoted, as far as the writers are 

 aware. For this freedom, they wish to be excused. 



